— Do you know if they _____to play football with us tomorrow? — I think they will come if they _____
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题目简介
— Do you know if they _____to play football with us tomorrow? — I think they will come if they _____
题目详情
— I think they will come if they _____ free.
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B. will come; are
C. come; are
D. come; will be
答案